Implement On-Chain Governance System: Proposals, Voting, Execution

[Steake]

Part of Epic: #78 - RC3: Developer Ecosystem & Tools

---

Goal: Enable on-chain governance for protocol parameters and upgrades.

Requirements:

• Proposal creation system
• Token-weighted voting (1 CELL = 1 vote)
• Delegation support
• Automatic execution with timelock
• Multi-sig guardian override

Acceptance Criteria:

• Proposals can be created and voted on
• Execution happens automatically after passing
• Emergency governance tested

See [RELEASE_REQUIREMENTS.md](https://github.com/Steake/BitCell/blob/master/docs/RELEASE_REQUIREMENTS. md)

[Steake]

@copilot please work on this issue.

Dependencies completed:

• No dependencies

Please create a PR when ready.

[copilot-swe-agent]

The agent encountered an error and was unable to start working on this issue: base ref does not exist.

[Steake]

⚠️ This issue references other issues (#78).

It is being treated as a blocked epic until those child issues are closed.
Once the referenced issues are completed, this epic can move to in-progress for implementation.

[Steake]

[autopilot] @copilot this issue is marked in-progress but no PR referencing #63 exists yet. Please create a draft PR (even if incomplete) so progress is visible.

[Steake]

[autopilot] @copilot this issue is marked in-progress but no PR referencing #63 exists yet. Please create a draft PR (even if incomplete) so progress is visible.

[Steake]

[autopilot] @copilot this issue is marked in-progress but no PR referencing #63 exists yet. Please create a draft PR (even if incomplete) so progress is visible.

[Steake]

[autopilot] @copilot this issue is marked in-progress but no PR referencing #63 exists yet. Please create a draft PR (even if incomplete) so progress is visible.

[Steake]

[autopilot] @copilot this issue is marked in-progress but no PR referencing #63 exists yet. Please create a draft PR (even if incomplete) so progress is visible.

[Steake]

[autopilot] @copilot this issue is marked in-progress but no PR referencing #63 exists yet. Please create a draft PR (even if incomplete) so progress is visible.